Skip to main content

Import Error - deadlock detected while trying to lock object TEST.CLIENT



Have received the below error while doing schema level refresh.

========================================================================
Processing object type SCHEMA_EXPORT/VIEW/GRANT/OWNER_GRANT/OBJECT_GRANT
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT

ORA-39083: Object type REF_CONSTRAINT failed to create with error:
ORA-04020: deadlock detected while trying to lock object TEST.CLIENT
Failing sql is:
ALTER TABLE "TEST"."TRANSACTION" ADD CONSTRAINT "TRANSACTION_FK" FOREIGN KEY ("LAST_UPDATED_BY_CLIENT_ID") REFERENCES "TEST"."CLIENT" ("CLIENT_ID") ENABLE;

========================================================================

First check for locked objects in the database. using the below queries.

SQL> sqlplus / as sysdba

-------------------------------------------------------------------------

SQL> select * from v$locked_object;

no rows selected

-------------------------------------------------------------------------

SQL> column blocker format a25
SQL> column blockee format a25
SQL> column sid_serial format a10
SQL>
SQL> select
  2  (select username || ' - ' || osuser from v$session where sid=a.sid) blocker,
  3  a.sid || ', ' ||
  4  (select serial# from v$session where sid=a.sid) sid_serial,
  5  ' is blocking ',
  6  (select username || ' - ' || osuser from v$session where sid=b.sid) blockee,
  7  b.sid || ', ' ||
  8  (select serial# from v$session where sid=b.sid) sid_serial
  9  from v$lock a, v$lock b
 10  where a.block = 1
 11  and b.request > 0
 12  and a.id1 = b.id1
 13  and a.id2 = b.id2;

no rows selected

-------------------------------------------------------------------------

Then try to execute the failed Query connecting to the schema. like below

Connect to that schema & execute.

SQL> ALTER TABLE "TEST"."TRANSACTION" ADD CONSTRAINT "TRANSACTION_FK" FOREIGN KEY ("LAST_UPDATED_BY_CLIENT_ID") REFERENCES "TEST"."CLIENT" ("CLIENT_ID") ENABLE;

Table altered.



Labels:

Comments

Post a Comment

Popular posts from this blog

ORA-39014: One or more workers have prematurely exited.ORA-00018: maximum number of sessions exceeded

ERROR: I was Performing a full database import and during the import I faced the below error. ORA-39014: One or more workers have prematurely exited. ORA-39029: worker 6 with process name "DW07" prematurely terminated ORA-31672: Worker process DW07 died unexpectedly. Job "SYSTEM"."SYS_IMPORT_FULL_04" stopped due to fatal error at 00:59:40 ORA-39014: One or more workers have prematurely exited. SOLUTION:  Run the import with fewer parallel processes, like PARALLEL=2 instead of 8. I was able to run the import successfully. NOTE 1: This errors occurs when there are less session allocation in the database. check the session,process parameters and increase them accordingly. To avoid such errors again. NOTE 2 : Note: Increasing processes parameter increases the amount of shared memory that needs to be reserved & the OS must be configured to support the larger amount of shared memory. So here we first need to increase the Memory & SG...
Post a Comment
Read more

ORA-01143: cannot disable media recovery - file 1 needs media recovery

I got a request from the client - To flashback the database to the existing restore point & disable flashback and archive log mode for database UATB. Here I came a cross error - ORA-01143. I followed the below steps. 1. SQL> select name from v$database; NAME ------------ UATB 2. SQL> SELECT NAME FROM V$RESTORE_POINT WHERE GUARANTEE_FLASHBACK_DATABASE='YES' ORDER BY TIME; NAME --------- UATB_COPY Here I'm going to restore the database to the above restore point. NOTE: The flashback database restore has to be done in MOUNT stage of the database. SQL> select name from v$database; NAME --------- UATB SQL> shut immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> startup mount ORACLE instance started. Total System Global Area  612368384 bytes Fixed Size                  1250428 bytes Variable Size             167775108 bytes ...
2 comments
Read more